Padamati posted an Question
April 17, 2020 • 20:11 pm 30 points
  • CSIR NET
  • Physical Sciences

The sum of residue of z+1÷{z^2(z-3) is

the sum of residue of z+1÷{z^2(z-3) in book is -4÷9 but I got answer zero,please clarify this sir

2 Answer(s) Answer Now
  • 0 Likes
  • 3 Comments
  • 0 Shares
  • comment-profile-img>
    Shanu arora best-answer

    solution :for z=0 ,residue is -4/9 and for z=3 it's 4/9 , thus ths sum is 0 . but I think in question there must be a boundary or region must have been given for which the point z=3 is outside that region and thus z=3 will not be considered to calculate if it lies outside the concerned region.otherwise if no region is given then your ans 0 is correct.

    cropped2071390170.jpg
whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers